Unmanned Aerial Vehicle with Hybrid Lift and Propulsion

Lucena, Alysson Nascimento de; Freire-Junior, Raimundo Carlos Silverio; Gonçalves, Luiz Marcos Garcia

doi:10.1109/lars/sbr/wre54079.2021.9605409

Cited by 1 publication

(2 citation statements)

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“…Among the various types of multirotors, the most popular are quadcopters, as they have good stability and control with less consumption of the energy matrix when compared to multirotors with more powertrains, such as hexacopters and octacopters. Multirotors with 3 arms are also used, however, a tilting mechanism is generally required in the tail power unit to cancel the free torque and carry out the yaw maneuver [22]. Carrying out a flight by means of a multirotor with only two powertrain sets is only possible with the help of control surfaces.…”

Section: Introductionmentioning

confidence: 99%

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Double Hybrid Tailsitter Unmanned Aerial Vehicle With Vertical Takeoff and Landing

2022

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We propose a new concept and architectural design for a double hybrid tailsitter unmanned aerial vehicle with vertical takeoff and landing capability. Basically, it consists of a modified flying wing with a single combustion powertrain set and a multirotor with 2 powertrain sets with electric motors. To this end, we have designed, built, and tested a prototype that spends less energy on vertical taking off and landing and also on horizontal flight, for maximizing flight endurance and distance. With electric propellers fixed at the leading wing edge, the tailsitter has two standard surfaces for elevation control and two vertical stabilizers that are used to give the necessary direction on vertical takeoff and landing. Experiments and results show the versatility of our hybrid tailsitter for operations in a restricted field. We performed several tests starting with the aircraft on the ground in vertical positioning. These tests include executing vertical takeoffs and landing, transitions from vertical to horizontal flight modes and transitions back from horizontal to vertical flight modes, and hovering, which were carried out successfully. Transition fourth and back from combustion to multirotor modes are inherent to some of those flight mode transitions, which have been performed smoothly. We also performed tests (in bench) to estimate the flight endurance. Final autonomous flight adjustments were not performed due to the Covid-19 pandemic caused by SARS-CoV-2. To this end the proposed and currently built prototype has proven to be functional as an effective hybrid UAV system.

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Section: Introductionmentioning

confidence: 99%

“…The multirotor is generally turned off during horizontal flight. For this, a simple approach is to use at least 3 electric rotors for VTOL and 1 or 2 combustion propellers for the horizontal flight [22].…”

Section: Introductionmentioning

confidence: 99%